TSPAN1 expression showed an average mean fold change of 2.214 (p = 1.31E-6) in 122 primary prostate carcinoma samples studied by Grasso et al. 33, and a mean fold change of 1.844 (p = 1.72E-7) in 185 samples studied by Taylor et al. 34. This evidence concerns the gene TSPAN1 and prostate carcinoma.